More often than not, our business/marketing/tech/trend predictions won't come true. Still, the reasons behind the original predictions are valuable. Try to find the thread that connects related ideas and take a bet on whatever that thread is.
The common thread? App stores are problematic for app users and app developers both. That's not obvious when looking at either of those ideas alone.
Find the thread. If you can, string together multiple threads. Most importantly, when you spot something, act on it.